Montreal-based MAADI Group recently designed a 151-foot-long, 6½-foot-wide pedestrian work bridge to connect platforms in the West Philippine Sea. Using high-strength aluminum for the bridge’s material, MAADI designed the bridge with lateral movement capability that could withstand deep-ocean movement and wind gusts up to 200 km/hr (124 mph).
MAADI’s President/CEO, Alexandre de la Chevrotière, says that water and wind movements can cause the platforms to shift by as much as one inch, so the bridge was engineered to account for movement up to one meter. A trolley system at one end of the bridge allows slight back-and-forth movements of the bridge between the platforms.
The span was built in four sections. Its abutments are unique, according to de la Chevrotière, in that their pin connections rotate on two axes. There’s also a pin connection at the top of the trolley, which allows the bridge to move in several different directions by as much as three degrees to account for ocean movements, he says.
The 13-ton bridge was built to accommodate up to 80 workers on deck. (The accompanying image shows 8.4 tons of water being used to test the span’s load capacity.) The bridge’s camber was designed to reduce the deflection caused by dead and live loads.
“Aluminum is the material of the future,” says de la Chevrotière. “It doesn’t rust and it’s maintenance free.”
Read about more innovations from BD+C's 2014 Great Solutions Report.
Related Stories
| Sep 12, 2012
Harvesting new ways to eliminate waste at the USDA
After installing 20 high-speed, energy-efficient hand dryers in restrooms throughout the USDA headquarters; the USDA reports seeing an immediate 50% reduction in the use of paper towels.
| Sep 11, 2012
RTKL appoints Lance Hosey as Chief Sustainability Officer and Senior Vice President
Author and authority on green design to spearhead RTKL Performance-driven DesignSM initiative.
| Sep 11, 2012
McQuade appointed CEO of Tishman Construction
McQuade will focus on driving the growth of the company into new markets and expanding market share in its current areas of operation.
| Sep 11, 2012
Ecosystem Management & Associates joins HDR
EM&A staff will do business as part of HDR Engineering and HDR Environmental, Operations and Construction.
| Sep 10, 2012
Specialty door types—plenty of functional variety
In the MasterFormat section 08 30 00, Specialty Doors and Frames, a number of door types are listed for special functions, access locations, sliding and folding hardware, and even pressure-resistant types.
| Sep 7, 2012
7 Do's and Don'ts for PV roof rack installation
As PVs grow in popularity, nearly half of all installations require roof rack systems. Our expert tells how to do the job right and protect your client’s roof.
| Sep 7, 2012
Net-zero energy pioneers on the el-hi frontier
Getting to net-zero is not easy, but the promise of eliminating energy bills and using state-of-the-art technology as a learning lab can make a compelling case to reach for net-zero.
| Sep 7, 2012
Healthcare architects get a preview of tomorrow’s medical landscape
The topic on everyone’s mind was how the Affordable Care Act would impact healthcare design and construction––and whether the law would even make it past the coming election cycle.
| Sep 7, 2012
Goettsch Partners designs new tower in Abu Dhabi
Al Hilal Bank’s 24-story flagship development provides contemporary office space.
| Sep 7, 2012
Suffolk awarded One Channel Center project in Boston
Firm to manage $125 million, 525,000-sf office building project.
